878052621 has 16 divisors (see below), whose sum is σ = 1189483200. Its totient is φ = 576014208.

The previous prime is 878052619. The next prime is 878052631. The reversal of 878052621 is 126250878.

It is not a de Polignac number, because 878052621 - 2¹ = 878052619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 878052621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878052631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257395 + ... + 260783.

It is an arithmetic number, because the mean of its divisors is an integer number (74342700).

Almost surely, 2^878052621 is an apocalyptic number.

It is an amenable number.

878052621 is a deficient number, since it is larger than the sum of its proper divisors (311430579).

878052621 is a wasteful number, since it uses less digits than its factorization.

878052621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 878052621 is about 29631.9527031210. The cubic root of 878052621 is about 957.5765773502.

The spelling of 878052621 in words is "eight hundred seventy-eight million, fifty-two thousand, six hundred twenty-one".